From: Yossi Etigin <yosefe@Voltaire.COM>
Date: Tue, 13 Jan 2009 03:28:42 +0000 (-0800)
Subject: IPoIB: Do not join broadcast group if interface is brought down
X-Git-Tag: v2.6.29-rc2~90^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=50df48f59d656d58a1734df5cfe00cdc9a74e8b5;p=pandora-kernel.git

IPoIB: Do not join broadcast group if interface is brought down

Because the ipoib_workqueue is not flushed when ipoib interface is
brought down, ipoib_mcast_join() may trigger a join to the broadcast
group after priv->broadcast was set to NULL (during cleanup).  This
will cause the system to be a member of the broadcast group when
interface is down.  As a side effect, this breaks the optimization of
setting the Q_key only when joining the broadcast group.

Signed-off-by: Yossi Etigin <yosefe@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
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